overheating TOYOTA AYGO 2019 Owners Manual (in English)

1002. Instrument cluster
AYGO_OM_Europe_OM99R19E
WARNING
■If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not
come on when you start the engine, this could mean that these systems are
not available to help protect you in an accident, which could result in death
or serious injury. Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repairer immediately if
this occurs.
NOTICE
■ To prevent damage to the engine and its components
The engine may be overheating if the high engine coolant temperature
warning light flashes or turns on. In this case, immediately stop the vehicle
in a safe place, and check the engine after it has cooled completely.
( P. 4 6 5 )

1774-1. Before driving
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Driving
AYGO_OM_Europe_OM99R19E
WARNING
●On vehicles with a multi-mode manual transmission, always apply the
parking brake, shift the shift lever to E, M or R, stop the engine and lock
the vehicle.
Do not leave the vehicle unattended while the engine is running.
● Do not touch the exhaust pipes while the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
● On vehicles with a multi-mode manual transmission, do not turn off the
engine until 1st or reverse is engaged properly and completely. Confirm
that the gear is engaged by viewing the gear position indicator.
Parking the vehicle without a gear engaged may cause the vehicle to
move result in an accident.
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an accident or fire
due to engine overheating. Additionally, if the vehicle is parked in a poorly
ventilated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also, the
parking brake may not securely hold the vehicle.
● If the brake booster device does not operate, do not follow other vehicles
closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
Have your brakes fixed immediately.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems; if one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and the braking distance will
increase.
Have your brakes fixed immediately.

1884-2. Driving procedures
AYGO_OM_Europe_OM99R19E
■ If the engine does not start
● The engine immobilizer system may not have been deactivated. (P. 7 6 )
Contact any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
● The steering lock may not have been canceled.
■ Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function. Operating the
engine switch again automatically cancels the steering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from running the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■ If the system is malfunctioning
 P. 421
■ If the electronic key battery is depleted
 P. 383
■ Operation of the engine switch
● If the switch is not pressed shortly and firmly, the engine switch mode may
not change or the engine may not start.
● If attempting to restart the engine immediately after turning the engine
switch off, the engine may not start in some cases. After turning the engine
switch off, please wait a few seconds before restarting the engine.
● The buzzer sound when the following occurs
• When the engine switch is pressed while the vehicle is running
Other than cases of emergency, do not press the engine switch while the
vehicle is running.
• When the engine is stopped by emergency shutdown operation
( P. 407)
The buzzer will sound continuously until the engine is restarted, or the
vehicle is completely stopped and the engine switch is turned to IGNI-
TION ON mode.
The smart entry & start system indicator
light (green) will flash quickly.
Press the engine switch while turning the
steering wheel left and right.

1984-2. Driving procedures
AYGO_OM_Europe_OM99R19E
Parking brake
To set the parking brake, fully
pull the parking brake lever
while depressing the brake
pedal.
To release the parking brake,
slightly raise the lever and
lower it completely while press-
ing the button.
■ Parking brake engaged warning buzzer
 P. 417
■ Usage in winter time
 P. 254
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2
NOTICE
■Before driving
Fully release the parking brake.
Driving the vehicle with the parking brake set will lead to brake components
overheating, which may affect braking performance and increase brake
wear.

2504-6. Using the driving support systems
AYGO_OM_Europe_OM99R19E
■ EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be
heard. This does not indicate a malfunction.
■ Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically
re-enabled in the following situations:
● When the engine switch is turned to the “LOCK” position (vehicles without a
smart entry & start system) or off (vehicles with a smart entry & start sys-
tem).
● If only the TRC system is turned off, the TRC will turn on when vehicle
speed increases
If both the TRC and VSC systems are turned off, automatic re-enabling will
not occur when vehicle speed increases.
■ Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from
overheating when there is frequent steering input over an extended period of
time. The steering wheel may feel heavy as a result. Should this occur, refrain
from excessive steering input or stop the vehicle and turn the engine off. The
EPS system should return to normal within 10 minutes.
■ Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will
operate:
● The emergency flashers are off
● Actual vehicle speed is over 55 km/h (35 mph)
● The brake pedal is depressed in a manner that cause the system to judge
from the vehicle deceleration that this is a sudden braking operation
■ Automatic system cancelation of emergency brake signal
The emergency brake signal will turn off in any of the following situations:
● The emergency flashers are turned on
● The brake pedal is released
● The system judges from the vehicle deceleration that is not a sudden brak-
ing operation

3336-1. Using the air conditioning system and defogger
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Interior features
AYGO_OM_Europe_OM99R19E
WARNING
■Burns
● Use caution when seating the following persons in a seat with the seat
heater on to avoid the possibility of burns:
• Babies, small children, the elderly, the sick and the physically chal-
lenged
• Persons with sensitive skin
• Persons who are fatigued
• Persons who have taken alcohol or drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
● Do not cover the seat with anything when using the seat heater.
Using the seat heater with a blanket or cushion increases the temperature
of the seat and may lead to overheating.
● Do not use the seat heater more than necessary. Doing so may cause
minor burns or overheating.
NOTICE
■ To prevent seat heater damage
Do not put unevenly weighted objects on the seat and do not stick sharp
objects (needles, nails, etc.) into the seat.
■ To prevent battery discharge
Turn the seat heaters off when the engine is not running.

4178-2. Steps to take in an emergency
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When trouble arises
AYGO_OM_Europe_OM99R19E
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
Low engine oil pressure warning light
Indicates that the engine oil pressure is too low.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
(Flashes or comes on)
High engine coolant temperature warning light
Indicates that the engine is overheating.
As the coolant temperature rise, it changes from flashing
to comes on.
 P. 465

4188-2. Steps to take in an emergency
AYGO_OM_Europe_OM99R19E
(Flashes)
“STOP” warning light
Indicates a malfunction in:
• Engine oil pressure is too low; or
• Engine is almost overheating.
 Immediately stop the vehicle in a safe place and con-
tact any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
(Comes on)
Multi-mode manual transmissi on warning light (vehicles
with a multi-mode manual transmission)
Indicates a malfunction in the multi-mode manual trans-
mission system.
 Have the system checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer.
Multi-mode manual transmission warning light (warning
buzzer) (vehicles with a multi-mode manual transmis-
sion)
Indicates a malfunction in the multi-mode manual trans-
mission system and that the clutch has become hot due to
excessive load.
 Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down. Have the sys-
tem checked by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer.
(Flashes)
Heat clutch warning light (warning buzzer) (vehicles
with a multi-mode manual transmission)
Indicates that the clutch has become hot, but does not
indicate a malfunction in the multi-mode manual transmis-
sion system.
 Pull over and shift the shift lever to N. Wait for about
15 minutes for the clutch to cool down.
Warning lightWarning light/Details/Actions

4228-2. Steps to take in an emergency
AYGO_OM_Europe_OM99R19E
*1: Parking brake engaged warning buzzer: A buzzer will sound if the vehicle is driven at a speed of approximately
5 km/h (3 mph) or more.
*2: Open door warning buzzer: A buzzer will sound if the vehicle reaches a speed of 5 km/h (3 mph) or
more with any door open.
*3: Driver’s and passenger’s seat belt buzzer: The driver’s and passenger’s seat belt buzzer sounds to alert the driver
and passenger that his or her seat belt is not fastened. The buzzer sounds
for 30 seconds after the vehicle reaches a speed of 20 km/h (12 mph).
Then, if the seat belt is still unfastened, the buzzer will sound in a different
tone for 90 more seconds.
■ To prevent the clutch from overheating (vehicles with a multi-mode man-
ual transmission)
●Do not use the accelerator pedal or starting assist system to hold the vehicle
on a hill.
● On an uphill incline, observe the following whenever possible:
• Maintain a safe distance from the vehicle ahead and avoid unnecessary
starting off and stopping.
• Avoid using E mode on an uphill slope. This will help to avoid unneces- sary gear changes.
Low fuel level warning light (warning buzzer)Indicates remaining fuel is approximately 5.25 L (1.4 gal.,
1.1 Imp.gal.) or less
 Refuel the vehicle.
Tire pressure warning light (if equipped)
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 423)
• Flat tire ( P. 427, 442)
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minutes. In case the
light does not turn off even if the tire inflation pressure
is adjusted, have the system checked by any autho-
rized Toyota retailer or Toyota authorized repairer, or
any reliable repairer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system ( P. 423)
 Have the system checked by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer.
Warning lightWarning light/Details/Actions

4658-2. Steps to take in an emergency
8
When trouble arises
AYGO_OM_Europe_OM99R19E
If your vehicle overheats
●The high engine coolant temperature warning light (P. 417) comes
on or flashes, or a loss of engine power is experienced. (For exam-
ple, the vehicle speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant
leaks, immediately contact any
authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
The following may indicate that your vehicle is overheating.
Correction procedures
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